Ocean Treks with Jeff Corwin

Best of: Natural Wonders (2x21)

: 28, 2018

Jeff sails the globe in search of its most amazing natural wonders. In Cozumel, Mexico, he explores a mysterious ancient underwater sinkhole. Then, he visits ice caves in Tokyo, Japan, and the steaming surface of an active volcano in Reykjavik, Iceland. Finally, Jeff witnesses thousands of spawning salmon in the pristine rivers of Sitka, Alaska.